How to use javaScript classes without constructor in WebStorm with Babel?

This code work in http://jsbin.com (ES6/Babel)

class Human {
gender = 'male';

prnG = ()=> {
console.log(this.gender)
}
}

class Person extends Human {
name = 'Ana';
gender = 'female';

prnN = ()=> {
console.log(this.name);
}
}

const human = new Human();
human.prnG();                                       //"male"

const person = new Person();
person.prnG();                                      //"female"   
person.prnN();                                      //"Ana"

I need settings for Babel to trasfer code in classes with constructor and property (this.gender = 'male')